Sealless pump design tackles HF alkylation

Magnetic drive sealless pumps featuring new applied sciences, particularly designed for use in Hydrofluoric Acid (HF) Alkylation, have been developed in response to the challenges of dealing with HF acid.
The new HMD Kontro sealless pump ensures conformity with all environmental health and safety standards via complete fluid containment. – Image: HMD Kontro
Hydrofluoric acid alkylation is a chemical/hydrocarbon processing application which poses explicit challenges to course of operators, including the risks associated with the handling of a lethal, highly corrosive fluid which poses a potential hazard to plant tools, the people who work on web site and the wider surroundings ought to leaks happen.
The course of
HF Alkylation combines olefins (primarily a mixture of propylene and butylene) with isobutene within the presence of a hydrofluoric acid catalyst to provide alkylate. A high-octane additive, alkylate is a critical security component that offsets the excessive vapour stress of the ethanol mandated in today’s low-sulphur unleaded petrol and gasoline provides. The continual tightening of fresh fuels’ legislation has elevated the demand for alkylate, which can additionally be answerable for the anti-knocking property of unleaded petrol/gasoline in trendy autos.
Potential dangers
The HF alkylation course of poses numerous severe environmental and health and security dangers if poorly managed, with the potential for acid runaway, accelerated tools corrosion and associated HF release. HF acid by its nature seeks out and assaults imperfections in cast metallic elements that will ultimately cut back the life of pumps, valves and different tools and worse still, lead to product leakage. Failure-prone mechanical seals can leak harmful course of fluids. The aggressive and damaging nature of HF acid places great importance on the selection of fabric of forged components, significantly by means of the pump casing and impeller.
Designed for resistance towards extremely corrosive fluids such as HF acids, magnetic drive sealless pumps provide total containment with built-in reliability. Magnetic drive sealless pumps featuring new technologies have been particularly designed to be used in hydrofluoric acid alkylation units and had been developed in response to the challenges of handling HF acid.
Magnetic drive sealless pumps featuring new applied sciences have been specifically designed for use in hydrofluoric acid alkylation units and had been developed in response to the challenges of handling HF acid. – Image: HMD Kontro
HMD Kontro HF pump
The result of shut collaboration between UOP Honeywell, the main licensor of HF alkylation expertise and HMD Kontro, and utilizing an revolutionary improvement process, the HMD Kontro HF pump contains a high integrity pump casing manufactured from Alloy C22 (ASTM A194 Gr. CX2MW) which has been tested using Hidden of Non-Destructive Examination (NDE).
Specialist design options
Built into the design of those subsequent era pumps are options which meet operator-specific wants for the HF alkylation process. They embody a pump casing in Alloy C22 supplies, which has been confirmed to offer the necessary resistance to corrosion and also meets NDE necessities for HF acid. In addition, the pump’s secondary containment system is rated to forty bar (580 psi), eliminating the potential of leakage into the environment, and lowering operational risks and the associated prices to satisfy stringent environmental and well being and security objectives. Finally, there could be continuous monitoring to ensure a dependable sealless pump performance which includes leak detection instrumentation and protection against dry pump running (power management monitor).
With Fully refundable to leak, no seal buffer techniques to assist and preserve and no supporting techniques, the most recent magnetic drive sealless pump know-how presents vital security, price and operational benefits. Lower end-user set up prices and simplified upkeep requirements, make it an effective whole-life proposition in comparison with conventional mechanically sealed pumps.

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